Centrifugal pump.



S. A. HUNTLEY.

GENTRIFUGAL PUMP. APPLICATION FILED APR. 2,1906. Q1 3, 1&9, Patented Feb. 2909.

8 SHEETS-SHEET 1 WWW-Mm W ISAHIUQA/ttoz S. A. HU'NTLEY.

CENTBIFUGAL PUMP.

APPLICATION IILIJ) APR. 2, 1906.

91 3, 140. Patented Feb. 23, 1909.

3 SHEETS-SHEET 3.

UNITED STATES PAIENT OFFICE.

STEPHEN A. HUNTLEY, OF DENVER, COLORADO.

CENTRIFUGAL PUMP.

Specification of Letters Patent.

Patented Feb. 2a, 1909.

Application filed April 2, 1906. Serial No. 309,243.

Touil it may concern.

Be-*it' k nown that I, STEPHEN A.- HUNT- ner, a c tizen of the United .States, residing in thecity and county of Denver and State ofColor'ado, have invented certain new and useful Improvements in Centrifugal Pumps;

a'ncl'I do declare the following to be a full,

clear ,and' exact description of the invention, such as. willv enable others skilled .inthe art towhichit appertainsto make and use the same, reference being hadto the accompanying drawings, and to the Eatte'rsand figures of reference marked 'theret *1, which form a part of this specification. y invention relates to im rovements in centrifugal pumps.

present improvement consists of cer tain novel features ofconstru-c tion, all .of

whichwillbe fully understood by reference '20.

to the accompanying drawing in which is illustrated .an embodiment thereof,

In this drawing, Figure 1 is a vertical longitudinal-section taken through parts of my implrovedconstruction, the other being s own-in elevation. Fig. 2 is a orie.

zontal section taken outhe line 2-2 Fig. 1. Fig. 3 is a section taken. on the line 3-3 Fig.1 omitting the outer casing, the parts v b'ein-g'shown' on a larger scale. Fig. 4 is a .top view in detail of a centering collar which connects the outer casing with the hollow revoluble shaft. In this/view the radial connecting rods are broken away and the parts shown ona larger scale than in Fig. I. Fig. 5 is a side view of the same showing the main pipe in place and the lower ballrace member in section; Fig. 6 is a' sectional view of a ball bearing, centering collar which also connects the outer casing-with the hollow revoluble shaft by means of radially disposed rods which are partly'broken away in'this view. Fig. 7 is a vertical longitudinal section taken throu h a" ort-ion of the hollow revoluble shaft, t e

i re and'itscasing, as well as the depending conduitextending below the valj'ecas; ing. This section is taken where the hollow shaft and the depending suction conduit showing the valve casing or .T-head with which the lower extremities of theJateral- "eduction. pipes are connected, the parts be ing shown on 'a'= larger scale than in Fig. 1 Fig.m8 isa-sectional view taken throu'glr the upperpart of the hollow shaft and its-con a nections, parts being shown on a larger;- scale. v9 is a similar view arts priming pump in place. Fig. 10 is a detail view of a portion of one of the lateral eduction pipes, shown partly in section and on a larger scale. Fig. 11 is a section view illustrating a longitudinally extensible suction conduit employed in cOnnectioInwith my improvements. Fig. 12 is a section taken through the suction conduit above its roller bearing the latter being shown in plan view and on a larger scale than in Fig. 1.

The same reference characters indicate the sameparts in all the .views.

Let the numeral 5 designate a'stationary upper flame to which is secured a plate 6 provided with a hub in which is formed a ball race. This plate is secured] to the stationary frame by bolts 7 ass'ed through cross bars 8 mounted-on the arms 5. Pass .ing throughthe plate 6 is a hollow revoluble shaft 9 to which is secured a ball race collar 10 cooperating with the ball race portion of the plate .6 to form a. ball bearing. The halls .12-of this bearing are "inter sed'be tween the two ball race members; y means shaft is' sus endedu'pon the frame 5. To this shaft a fast a' power pulley 11. Projecting above the upper extremity of the hollow shaft 9 is a pipe 13 which forms a guide for the hollow valve stem 14 also exposed above the guide 13. This valve stem extends downwardly through the hollow shaft 9 and is connected at its lower extremity with an auxiliary valve casing 15 having an orifice'16'at its 27 attached tothe lower extremities of the flexible conduit members28 forming a part of they lateral educt'ion conduits 29. The upper extremities-of these conduits are open forthe escape (if the water.)

The hollow revoluble shaft 9 connected at its lower; extremity with'the T-head 25,

having exterior threads which engage the interior threads formedin an opening at the so of this construction the. hollow revolublc ve the ball bearing is. made v .top o-f'th'e; head; The lateral-eduction pipes 29 are connected with the hollow shaft 9 by means of upper and lower clamping collars 30 applied to the shaft 9, the said collars being connected with upper and lower loops 31 and 31 respectively, which surround the eduction pipes. is connected with the loops 31 by rods 32; while the loops 31 are connected with the other collar 30 by rods 32*. Each eduction pipe 29 where it passes through the loop 31 is reinforced as shown at 33 to receive a bolt 34 which forms a pivot and allows the pipe 29 to swing inwardly to the position shown by dotted lines in Fig. 1, the opening of each loop 31 being of sutlicient length'to permit this movement. Between the two clamping collars 30, is located a collar 36 surrounding the pipe 9 and with which a coil spring 37 g is connected on each side, The opposite extremities of the springs 37 are connected with collars 38 which lit the eduction pipes 29 closely. v

is normally such that as the machine slows The tension of the springs 37 down or diminishes its speed preparatory to stopping, the said tension will overcome the centrifugal force before the machine stops 4 and thus draw the eduction pipes inwardly to the dotted line position in Fig. 1 thus reducing the centrifugal force since the two pipes are brought nearer together causing their upper open extremities to move in a smaller circle. Thisaction diminishes the centrifugal force sufliciently to prevent the discharge of the priming before the machine stops. In other words by virtue of this arrangement it is my intention to maintain the eduction pipes full of water when the machine stops thus obviating the necessity of reprim'ing preparatory to commencing the next operation. It is evident that the 111- Ward lateral swing of the eduction plpes 29 is permitted by virtue of the flexible elbow members 28. v

Connected with the depending flange 24 of the collar 22, is a depending. suction pipe 39 which passes through a bearing 40 consisting of a body part-41 in which is journaled a number of antifrictional rollers 42 adapted to engage the pipe during its rotary action incident to the operation of the machine. It may be stated that this suction pipe rotates with the hollow shaft 9 and the eduction pipes 29. This bearing 40 is provided with a base 43 secured to a suitable support 44. This support 44 together with the bearing 40, maintains the hollow shaft 9 together with the suction pipe and their attachments, in vertical alinement during the operation of the pump.- By means of .of a flexible sleeve 44 is secured: to the One collar 30 pipe 39 by a clamping collar 45; while the lower extremity of the flexible sleeve is secured to an outer pipe 46 by a similar clamping collar 47. The pipe 39 telescopes in the pipe 46, and by loosening the collar 45, the outer pipe 46 may be raised or lowered whereby the suction conduit member of the apparatus composed of the two pipes 39 and 46, may be shortened or lengthened as may be desired and according to the level of the water in the source of supply. The.

depth or level of the water inthe source may of water tight joints where the flexible sleeve is connectedwith the device Inclosing the apparatus above the support 46,.is a casing 48 composed of upper and lower portions 49 and 50. The lower por tion 50 incloses the tension pipes 29 and is provided with an opening through which the upperpart of the eduction pipe 39 passes. The upper portion or member 49 of this casing is outwardly flared or has the shape of the frustum of a cone to aid in elevating the water. This outwardly flared member acts in maintaining a circular sheet of water which is much easier to elevate than a solid body, and as the water is caused to be thrown outwardly by its centrifugal action this circular sheet is easily maintained with a member the shape of the frustum of a cone.

further object of therevolving cylinder 49 is to reduce the friction which would ordinarily result from the centrifugal action of the water against a stationary cylinder. The reduction of the friction materially aids in raising water as there is-practically no resistance to the centrifugal action of the water as it leaves the eduction pipes. The entire casing 48 is supported in place and centeredaround the shaft 9, by a collar 51 surrounding said shaft and connected with the .upper portion or the member 49 of the casing by radial rods 52. This collar 5].- is provided on its under surface with a ball .race and cooperates with a collar 53 secured to the shaft 9 and carrying ball bearings 54. The casing'is thus allowed to rotate around the shaft 9 while suspended thereon. .In order to further support the casing and give itthe necessary strength, a collar 55 surrounds the shaft 9 near the lower part of the casing member 49. This collar is concrease nected'with the casing by rods 56. The collar 51 is'connected with the rods 56 by brace rods 57. .By virtue of this construction the casing 48 1s. interiorly strengthened and 5 braced and centered to rotate around theshaft 9 under the influence of the action of the water discharged iron the upper extremities of the eduction pipes 29 as heretofore explained.

The casing 48 is provided adjacent the discharge extremities of the eduction pipes 29, with a horizontal zone provided wlth a series of blades 58 whose outer edges are secured to the inner surface of the casing. These blades are angular in shape changing their direction about-midway of their length as shown at 59 at which point they are bent rearwa-rdly relatively to the direction of rotary travel of the casing under the influence of the liquid discharged from the eduction pipes 29. These plates 58 are so arranged as to form compartments or bucket spaces 60 which catch the water as it is discharged from the eduction pipes. As the water is discharged into these bucket spaces or.

' against these blades or wings, a. rotary movement" is imparted to the entire casing 48, the said'casing revoiving around the shait 9 as tan axle, being centered thereonby virtue of rotary motion imparted to thecasing' by the action of 'the water discharged from the 'ednction pipesby the centrifugal force ofthe'. rotating apparatus develops sufficient centrifugal force through the rotation of-the casing 48, to continue the upward movement of the water to the top of the said casing where it isdischarged into a trough 61.

By virtue of this construction and ar- 4g rangement, it is only necessary to employ suflicient lllltlttl' powerin the operation of the apparatus to discharge the waterfrom then per extremities of the eduction pipes 29.-- hejforce of the discharge fromthese casin V4 8 and develops suflicient secondary centr fugal force to cause the water to rise 'to thetop of the casing 48 and discharge into the trough-61, without additional power. so In this-way the water may beelevated a numb r of feet without any additional" ex.-

p'ense, since the force of the water escaping from. the eduction pipes resulting from the application of the initialv power, has the the construction heretofore explained. This "pipes then becomes suificient to. rotate the point.

hundred revolutions per minute approximately to the casing e8, by the action ofithe water upon the bucket blades 58, which speed of the casing will be sufficient tocause Ithe water, by thecentrifugal action of the easing, to contin e its npwardmovement and discharge at the top of the said easing into the trough .61 as heretofore .enplained.

In order to facilitate the action of the 'water upon the blades 58, a -funnel sh ape.d casing'62 is attached to the inner edges of the upper part-of the blades,'-whereby the water in itsupward course between the bucket .99 blades, guided and assisted-in its upward movemen an pre n e from afalling back since the space within which it is confined is contracted thus its speed and centrifugal .acti-r n .By ,virtue [of h arr ngement t e pass ge lithe wate thrdugh the upper portions of the bucket Spaces l mited t sa pa e and not allowed ;to escape inwardly. By' means of thiseonstructionthe water is held within ,the maximum circuit of centrifugal action thus .snbject; g it to the greatest possible power which an developed .bya

ren-sp o rc aijae i n i the cas T wat rentersth eesfngefi at point in a large volume and the centrifugal action is mer l a t e roy d here' ha a any other point and for-this reason the special arrangement of the funnel=shaped I casing as abo've descr bed, 'is very impor- 1-10.

tent. Thefunnelshapedzcasin'g .62 also prevents any rebou'nd which might take place when. the water is thrown, by the blades .58, against the inner wall'of the casing 48. This is a very imp rtant feature as it holds the water betweenihe casing 48;an'd the member 62, and revents'the water being thrown upon't e blades and destroying the initial centrifugal aetionjwhichtakes. place at this 12" Preparatory to star-tin the=.pu1np,a.priming ump 63 is applie to the upper extrem'lty of the hollow valve stem 14 as shown at 64 (seeFig. 9). This pump is composed of a casing 65, a valve 66,;1. valve stem '67 126 and alumni piece [68, By reciprocating the piston 66 in this pr min pump, the air is U pumped out of the hollhw valve stelnle.

the hall valve 17 As the air enters this .casmg, is'driven out through the orifice 18 openihg the clapper valve 19. In this way the air is pumped out of the suction conduit composed of the pipe members 39 and 46,

with the result that the water flows upwardlytaking the place of the ai'r and shortly fills the eduction pipes 29. The centrifugalpump is then primed and the priming pump Inechanismmay be-detached from the hollow stem 14, and a special casing-:99 screwed thereon making a tight joint around the top of the hollow valve stem and leaving an opportunity for the said valve stem to have the necessary vertical movement incident to the opening and closing of the mainvalve 20 during the operation of .the pump. The lower extremity of the guide pipe 13 is connected with a centering block -13 'which is fitted into the hollow shaft 9 therefrom',=,a depending suction pipe communicating with the said valve casing at its upper extremity by a valve-controlled open-,

ing,.and with a source of liquid supply at its lower extremity, a rotary casingconstructed to be acted on by the liquid as it escapes from the eduction pipes, whereby suflicient rotary speed is imparted to' continue the upward movement of the liquid by'centrifugal force without the employment of additional initial power.

2. In a centrifugal pump, the combination of a central shaft suspended to rotate, a pivoted lateral eduction pipe connected with the shaft, a valve casing also connected with the shaft and communicating with the lower extremity of the eduction pipe, a suction conduit communicating with the valve casii a by a valve-controlled opening, and

rotary means connected with the shaft to revolve independently thereof, the said means being constructed to be rotated by the force of the liquid escaping from the eduction pipe, the said rotary means includa casing constructed to carry the water upwardly a predetermined distance under the influence of the centrifugal force developed by its rotary action.

3. In a centrifugal pump, the combination of a vertically disposed hollow shaft mounted to rotate, pivoted laterally disposed eduction pipes connected with the hollow shaft to rotate therewith, a depending suction pipe extending below the eduction pipes, the

suction pipe communicating with the eduction pipes, a valve for controlling the communication between the suction pipe and the eductlonpipes, a hollow valve stempassed through the hollow rotary shaft and connected with the valve, the said valve stem having a valve-controlled orifice at its lower extremity communicating with the suction pipeand havin -a second valve-controlled orifice communicating with the eduction pipes, the valves ofthe two orificesbeing oppositely disposed, and a priming pump connected with the upper extremity of the hollow valve stem for the purpose set forth.

4. Ina centrifugal pump, the combination of a vertically disposed shaft mounted to rotate, pivoted laterally disposed eduction pipes connected to rotate with the shaft, a suction conduit communicating with the eduction pipes by a valve-controlled opening, the upper portions of the eduction pipes being. constructed to have a limited swinging movement in radial planes whereby their upper extremities are allowed the maximum movement, and a tension connection between the eduction pipes and the shaft whereby the upper extremities of the said pipes are ice time allow a lateral swinging movement, and

tension springs connecting the eduction pipes with the shaft, the tension of the said springs being regulated to draw the eduction pipes inwardly when the speed of rotation has diminished to a predetermined limit.

6. A centrifugal pump comprisinga vertically disposed shaft mounted to rotate, a

suction pipe connected to rotate with the shaft, pivoted laterally disposedeductionpipes connected to rotate with the shaft and communicating with the suction pipe by a valve-controlled opening, a casing surrounding the eductlon pipes, extending above the same and connected with the rotary shaft to.

rotate around the same but independently thereof, its upper portion having the shape of the frustum of a cone, the said casing being provided with a zone of blades surrounding its interior in the zone of the discharge from the upper extremities of the eduction pipes, the bladesbeing arrangedto impart rotary'movement to, the casingby virtue of the force of the discharge from the eduction pipes for the purpose set forth. 7. In a centrifugal pump, the combination of a vertically disposed hollow shaft mounted to rotate, laterally? disposed eduction pipes connected torotate with the shaft, :1 depending suction conduit communicating with the eduction pipes by a suitable 0 ening, a valve controlling said opening, a 01- low valve stem passing through the hollow.

shaft, its lower extremity being connected with the said valve while its upper extremity is exposed at the top of the shaft, a hollow guide pipe extendin downwardly from the top of the rotarys liaft, its lower extremity being centered Within the shaft, the said pipe forming a centering guide for the valve stem, and a priming pump adapted to be connected with the upper extremity of 15 the valve stem for the purpose set forth. In testimony whereof I afiix my signature in presence of two Witnesses.

' STEPHEN A. HUNTLEY.

Witnesses A. J. OBRIEN, DENA NELSON. 

